package org.simantics.document.server.request;
-import gnu.trove.set.hash.THashSet;
-
import java.util.Collection;
import java.util.Collections;
+import java.util.HashSet;
import java.util.Set;
import org.simantics.db.ReadGraph;
+import org.simantics.db.common.request.UnaryRead;
import org.simantics.db.exception.DatabaseException;
import org.simantics.db.layer0.request.VariableChildren;
import org.simantics.db.layer0.request.VariableRead;
public NodesRequest(Variable var) {
super(var);
- }
-
- @Override
- public Set<Variable> perform(ReadGraph graph) throws DatabaseException {
-
- long s = System.nanoTime();
-
- StructuralResource2.getInstance(graph);
- if(variable == null)
- return Collections.emptySet();
-
- Set<Variable> nodes = new THashSet<Variable>();
- Collection<Variable> children = graph.syncRequest(new VariableChildren(variable));
- for(Variable child : children) {
- Set<Variable> childNodes = graph.syncRequest(new NodesRequest2(child));
- nodes.addAll(childNodes);
- }
-
+ }
+
+ static class CollectNodesRequest2 extends UnaryRead<Collection<Variable>, Set<Variable>> {
+
+ public CollectNodesRequest2(Collection<Variable> nodes) {
+ super(nodes);
+ }
+
+ @Override
+ public Set<Variable> perform(ReadGraph graph) throws DatabaseException {
+ HashSet<Variable> rs = new HashSet<>(); // result
+ for(Variable child : parameter) {
+ Set<Variable> childNodes = graph.syncRequest(new NodesRequest2(child));
+ rs.addAll(childNodes);
+ }
+ return rs;
+ }
+
+ }
+
+ @Override
+ public Set<Variable> perform(ReadGraph graph) throws DatabaseException {
+
+ long s = System.nanoTime();
+
+ StructuralResource2.getInstance(graph);
+ if(variable == null)
+ return Collections.emptySet();
+
+ Collection<Variable> children = graph.syncRequest(new VariableChildren(variable));
+
+ Set<Variable> nodes = graph.syncRequest(new CollectNodesRequest2(children));
+
if(DocumentRequest.PROFILE) {
- long dura = System.nanoTime()-s;
- System.err.println("NodesRequest " + System.identityHashCode(this) + " " + variable.getURI(graph) + " in " + 1e-6*dura + "ms.");
+ long dura = System.nanoTime()-s;
+ System.err.println("NodesRequest " + System.identityHashCode(this) + " in " + 1e-6*dura + "ms. " + variable.getURI(graph));
}
-
- return nodes;
- }
+ return nodes;
+
+ }
}
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